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September Weather in Chaihu, China

Last updated: August 23, 2025

In Chaihu, China, the average temperature in September is a comfortable 24°C (76°F). Expect minimum temperatures to dip to 15°C (60°F), while highs can reach up to 35°C (96°F). With an average humidity of 70%, the weather can feel quite warm. Additionally, be prepared for some rain, as 89 mm (3.5 in) of precipitation is expected over 10 days.

September Temperature in Chaihu

In September in Chaihu, the average temperature is 24°C (76°F). Maximums can reach 35°C (96°F), and minimums can be as low as 15°C (60°F). This pleasant weather makes it an ideal time for outdoor activities and exploring the sights.

September Weather in Chaihu: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Chaihu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chaihu, September typically has an average temperature of 24°C (76°F), with highs reaching up to 35°C (96°F) and lows dropping to around 15°C (60°F).
JanFebMarAprMayJunJulAugSepOctNovDec404555637279838476645544
Data source: Temperature data for Chaihu generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Chaihu

In Chaihu in September, the precipitation amount is 89 mm (3.5 in) over a period of 10 days.

September Precipitation Trends in Chaihu

The chart displays monthly precipitation patterns in Chaihu, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Chaihu, September typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec3833779814519520211689624015
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Chaihu

In Chaihu in September, humidity is 70%. With an average temperature of 24°C (76°F), this humidity feels like a warm, enveloping blanket that can make outdoor activities feel a bit sticky and heavier, so travelers should stay hydrated and take regular breaks to enjoy the sights comfortably.

September Average Humidity in Chaihu

This chart illustrates the average monthly humidity levels in Chaihu, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Chaihu is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%78%87%85%82%84%88%84%70%77%84%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Chaihu

In Chaihu in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Chaihu.

Maximum UV Index Levels in Chaihu for September

The chart shows the monthly maximum UV Index (UVI) for Chaihu in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Chaihu typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec55891111111110864
Data source: Chaihu September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Chaihu Compares to Other Months

Weather in Chaihu varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Chaihu, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Chaihu, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)38 mm (1.5 inches)74%moderate
February Weather7°C (45°F)33 mm (1.3 inches)77%moderate
March Weather13°C (55°F)77 mm (3.0 inches)87%very high
April Weather17°C (64°F)98 mm (3.9 inches)85%very high
May Weather22°C (72°F)145 mm (5.7 inches)82%extreme
June Weather26°C (79°F)195 mm (7.7 inches)84%extreme
July Weather28°C (83°F)202 mm (7.9 inches)88%extreme
August Weather29°C (84°F)116 mm (4.6 inches)84%extreme
September Weather24°C (76°F)89 mm (3.5 inches)70%very high
October Weather18°C (64°F)62 mm (2.4 inches)77%very high
November Weather13°C (56°F)40 mm (1.6 inches)84%high
December Weather7°C (44°F)15 mm (0.6 inches)80%moderate

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